Nonstop flight route between Portimão, Algarve, Portugal and Montague, California, United States:
Departure Airport:
(37°8'51"N by 8°34'46"W)
Arrival Airport:
(41°46'53"N by 122°28'5"W)
Distance from PRM to SIY:
5,575.63 miles (8,973.08 km)
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Jump to:
- About this route
- PRM Airport Information
- SIY Airport Information
- Facts about PRM
- Facts about SIY
- Map of Nearest Airports to PRM
- List of Nearest Airports to PRM
- Map of Furthest Airports from PRM
- List of Furthest Airports from PRM
- Map of Nearest Airports to SIY
- List of Nearest Airports to SIY
- Map of Furthest Airports from SIY
- List of Furthest Airports from SIY
About this route:
A direct, nonstop flight between Portimão Airport (PRM), Portimão, Algarve, Portugal and Siskiyou County Airport (SIY), Montague, California, United States would travel a Great Circle distance of 5,576 miles (or 8,973 kilometers).
A Great Circle is the shortest distance between 2 points on a sphere. Because most world maps are flat (but the Earth is round), the route of the shortest distance between 2 points on the Earth will often appear curved when viewed on a flat map, especially for long distances. If you were to simply draw a straight line on a flat map and measure a very long distance, it would likely be much further than if you were to lay a string between those two points on a globe. Because of the large distance between Portimão Airport and Siskiyou County Airport, the route shown on this map most likely appears curved because of this reason.
Try it at home! Get a globe and tightly lay a string between Portimão Airport and Siskiyou County Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
| IATA / ICAO Codes: | PRM / LPPM |
| Airport Names: |
|
| Location: | Portimão, Algarve, Portugal |
| GPS Coordinates: | 37°8'51"N by 8°34'46"W |
| Area Served: | Portimão |
| Airport Type: | Public |
| Elevation: | 5 feet (2 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from PRM |
| More Information: | PRM Maps & Info |
Arrival Airport Information:
| IATA / ICAO Codes: | SIY / KSIY |
| Airport Names: |
|
| Location: | Montague, California, United States |
| GPS Coordinates: | 41°46'53"N by 122°28'5"W |
| Operator/Owner: | Siskiyou County |
| Airport Type: | Public |
| Elevation: | 2648 feet (807 meters) |
| # of Runways: | 1 |
| View all routes: | Routes from SIY |
| More Information: | SIY Maps & Info |
Facts about Portimão Airport (PRM):
- The closest airport to Portimão Airport (PRM) is Faro International Airport (FAO), which is located 35 miles (56 kilometers) ESE of PRM.
- Because of Portimão Airport's relatively low elevation of 5 feet, planes can take off or land at Portimão Airport at a lower air speed than at airports located at a higher elevation. This is because the air density is higher closer to sea level than it would otherwise be at higher elevations.
- The furthest airport from Portimão Airport (PRM) is Dargaville Aerodrome (DGR), which is nearly antipodal to Portimão Airport (meaning Portimão Airport is almost on the exact opposite side of the Earth from Dargaville Aerodrome), and is located 12,276 miles (19,756 kilometers) away in Dargaville, New Zealand.
- In addition to being known as "Portimão Airport", another name for PRM is "Aeródromo Municipal de Portimão".
- Portimão Airport (PRM) currently has only 1 runway.
Facts about Siskiyou County Airport (SIY):
- On 13 September 1962 representatives from the United States Air Force Air Defense Command met with the Siskiyou County, Board of Supervisors.
- The United States Army Air Forces first leased the Siskiyou County Airport on 18 November 1942.
- The furthest airport from Siskiyou County Airport (SIY) is Tôlanaro Airport (FTU), which is located 11,131 miles (17,914 kilometers) away in Tôlanaro, Madagascar.
- In addition to being known as "Siskiyou County Airport", other names for SIY include "Siskiyou County Air Force Auxiliary Airfield" and "Siskiyou County Army Air Field".
- Following the initial military use, commercial operations of the airport continued.
- Siskiyou County Airport (SIY) currently has only 1 runway.
- The closest airport to Siskiyou County Airport (SIY) is Montague Airport-Yreka Rohrer Field (RKC), which is located only 5 miles (9 kilometers) SW of SIY.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 35.07 miles (56.43 km) ESE | Faro International Airport (FAO) | Faro, Portugal |     |
| 2 | 73.46 miles (118.22 km) NNE | Beja Airport (BYJ) | Beja, Portugal | |
| 3 | 116.38 miles (187.29 km) NNW | Lisbon Portela Airport (LIS) | Lisbon, Portugal | |
| 4 | 141.89 miles (228.35 km) E | Jerez Airport (XRY) | Jerez de la Frontera, Spain | |
| 5 | 148.55 miles (239.07 km) E | Seville Airport (SVQ) | Seville, Spain | |
| 6 | 153.87 miles (247.63 km) NE | Badajoz Airport (BJZ) | Badajoz, Spain | |
| 7 | 177.59 miles (285.80 km) ESE | Tangier Ibn Battouta Airport (TNG) | Tangier, Morocco | |
| 8 | 191.82 miles (308.70 km) ESE | Gibraltar International Airport (GIB) | Gibraltar | |
| 9 | 201.39 miles (324.11 km) ESE | Ceuta Heliport (JCU) | Ceuta, Spain | |
| 10 | 207.96 miles (334.68 km) N | Coimbra Airport (CBP) | Coimbra, Portugal | |
| 11 | 210.45 miles (338.68 km) ENE | Córdoba Airport (ODB) | Córdoba, Spain | |
| 12 | 210.70 miles (339.09 km) ESE | Sania Ramel Airport (SII) | Sidi Ifni, Morocco | |
| 13 | 210.70 miles (339.09 km) ESE | Sania Ramel Airport (TTU) | Tétouan, Morocco | |
| 14 | 223.39 miles (359.50 km) NNE | Covilhã Airport (COV) | Covilhã, Portugal | |
| 15 | 226.09 miles (363.85 km) SSE | Kenitra Air Base (NNA) | Kenitra, Morocco | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 12,276.14 miles (19,756.49 km) WSW | Dargaville Aerodrome (DGR) | Dargaville, New Zealand | |
| 2 | 12,259.49 miles (19,729.69 km) SW | Kaitaia Airport (KAT) | Kaitaia, New Zealand | |
| 3 | 12,259.28 miles (19,729.35 km) SW | Kaikohe Aerodrome (KKO) | Kaikohe, New Zealand | |
| 4 | 12,250.71 miles (19,715.56 km) W | Auckland Airport (AKL) | Mangere, New Zealand | |
| 5 | 12,247.45 miles (19,710.31 km) WSW | Whangarei Airport (WRE) | Whangarei, New Zealand | |
| 6 | 12,246.41 miles (19,708.63 km) SW | Kerikeri Airport (KKE) | Kerikeri, New Zealand | |
| 7 | 12,240.81 miles (19,699.63 km) W | Ardmore Airport (AMZ) | Ardmore, New Zealand | |
| 8 | 12,239.20 miles (19,697.04 km) SW | New Plymouth Airport (NPL) | New Plymouth, New Zealand | |
| 9 | 12,216.74 miles (19,660.88 km) WSW | Hamilton International Airport (HLZ) | Hamilton, New Zealand | |
| 10 | 12,209.80 miles (19,649.71 km) W | Coromandel Aerodrome (CMV) | Coromandel, New Zealand | |
| 11 | 12,209.43 miles (19,649.12 km) W | Thames Aerodrome (TMZ) | Thames, New Zealand | |
| 12 | 12,203.79 miles (19,640.04 km) WSW | Great Barrier Aerodrome (GBZ) | Great Barrier Island, New Zealand | |
| 13 | 12,196.40 miles (19,628.15 km) W | Matamata Airport (MTA) | Matamata, New Zealand | |
| 14 | 12,172.16 miles (19,589.14 km) W | Tauranga Airport (TRG) | Tauranga, New Zealand | |
| 15 | 12,166.84 miles (19,580.58 km) SSW | Takaka Aerodrome (KTF) | Takaka, New Zealand | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 5.33 miles (8.58 km) SW | Montague Airport-Yreka Rohrer Field (RKC) | Montague, California, United States | |
| 2 | 45.78 miles (73.68 km) NE | Crater Lake- Klamath Regional Airport (LMT) | Klamath Falls, Oregon, United States | |
| 3 | 45.93 miles (73.92 km) NNW | Rogue Valley International–Medford Airport (MFR) | Medford, Oregon, United States | |
| 4 | 63.14 miles (101.61 km) NNE | Chiloquin State Airport (CHZ) | Chiloquin, Oregon, United States | |
| 5 | 88.39 miles (142.26 km) S | Redding Municipal AirportRedding Army Airfield (RDD) | Redding, California, United States | |
| 6 | 91.12 miles (146.64 km) W | Del Norte County Regional Airport (CEC) | Crescent City, California, United States | |
| 7 | 95.81 miles (154.20 km) WNW | Brookings Airport (BOK) | Brookings, Oregon, United States | |
| 8 | 101.56 miles (163.44 km) WSW | Arcata/Eureka Airport (ACV) | McKinleyville, California, United States | |
| 9 | 108.89 miles (175.23 km) SW | Murray Field (EKA) | Eureka, California, United States | |
| 10 | 109.46 miles (176.16 km) WNW | Gold Beach Municipal Airport (GOL) | Gold Beach, Oregon, United States | |
| 11 | 109.47 miles (176.17 km) ENE | Lake County Airport (LKV) | Lakeview, Oregon, United States | |
| 12 | 110.38 miles (177.64 km) NNW | Roseburg Regional Airport (RBG) | Roseburg, Oregon, United States | |
| 13 | 113.23 miles (182.22 km) S | Red Bluff Municipal Airport (RBL) | Red Bluff, California, United States | |
| 14 | 121.20 miles (195.05 km) SW | Rohnerville Airport (FOT) | Fortuna, California, United States | |
| 15 | 133.84 miles (215.39 km) NW | Bandon State Airport (BDY) | Bandon, Oregon, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 11,131.45 miles (17,914.28 km) SSE | Tôlanaro Airport (FTU) | Tôlanaro, Madagascar | |
| 2 | 11,047.56 miles (17,779.27 km) SE | Ampanihy Airport (AMP) | Ampanihy, Madagascar | |
| 3 | 11,017.86 miles (17,731.48 km) S | Pierrefonds Airport (ZSE) | Saint-Pierre, Réunion | |
| 4 | 10,988.56 miles (17,684.33 km) S | Roland Garros Airport (RUN) | St Denis, Réunion, France | |
| 5 | 10,961.53 miles (17,640.83 km) S | Sir Seewoosagur Ramgoolam International Airport (MRU) | Plaisance, Mauritius | |
| 6 | 10,917.89 miles (17,570.60 km) SSE | Mananjary Airport (MNJ) | Mananjary, Madagascar | |
| 7 | 10,906.39 miles (17,552.09 km) SSE | Fianarantsoa Airport (WFI) | Fianarantsoa, Madagascar | |
| 8 | 10,877.23 miles (17,505.16 km) SSW | Sir Gaëtan Duval Airport (RRG) | Rodrigues Island, Mauritius | |
| 9 | 10,846.13 miles (17,455.11 km) SE | Andavadoaka Airport (DVD) | Andavadoaka, Toliara province, Atsimo-Andrefana region, Madagascar | |
| 10 | 10,833.60 miles (17,434.95 km) SSE | Manja Airport (MJA) | Manja, Menabe, Madagascar | |
| 11 | 10,827.42 miles (17,424.99 km) SE | Morombe Airport (MXM) | Morombe, Madagascar | |
| 12 | 10,755.45 miles (17,309.18 km) ESE | Margate Airport (MGH) | Margate, KwaZulu-Natal, South Africa | |
| 13 | 10,752.16 miles (17,303.88 km) ESE | Richards Bay Airport (RCB) | Richards Bay, KwaZulu-Natal, South Africa | |
| 14 | 10,746.15 miles (17,294.22 km) SSE | Miandrivazo Airport (ZVA) | Miandrivazo, Madagascar | |
| 15 | 10,742.67 miles (17,288.60 km) ESE | King Shaka International (DUR) | Durban, KwaZulu-Natal, South Africa | |